iliac crest iliac crest Anterior superior iliac spine pubic crest ischial spine greater sciatic notch iliac fossa auricular surface (articulation site with sacrum) obturator foramen pubic symphysis site inferior pubic ramus superior pubic ramus ischial tuberosity ischial ramus ishcial spine pubic crest ASIS (anterior superior iliac spine) iliac crest ilium pubis ischium